Marine vessel.



No. 727,827. PATENTED MA Y '12, 1903.

J.M0MILLAN.

MARINE VESSEL.

APPLIOATION FILED MAY 9; 1902.

H0 MODEL.

' WITNESSES:

Patented May 12, 1903.

PATENT OFFICE.

JOHN MOMILLAN, OF BROOKLYN, NEW YORK.

MARINE VESSEL.

SPECIFICATION forming part of Letters Patent No. 727,827, dated May 12, 1903.

Application filed May 9,1902. Serial No. 106,568. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN MCMILLAN, a citizen of the United States, residing at Brooklyn,

vide a vessel equipped on its sides with antifrictional devices which will facilitate the vessels passage through the Water.

In the drawings, Figure 1 is a side elevation of a vessel embodying myimprovements. Fig. 2 is a vertical sectional viewon the line. a; 00, Fig. 1. Fig. 3 is an enlarged detail perspective view of part of one of the channels, a journal-box, and the securing-bolts. Fig. 4 is an enlarged detail view of one of the rollers, partly broken away.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring to the drawings, 1 designates a marine vessel of any desired model. For the purpose of illustration I have shown an iron or steel vessel of the common type. Beginning at a short distance from the stem and extending aft to within a short distance of the stern-post and from above the load waterline to within a short distance of the keel I provide a series of antifrictional devices designed to facilitate the passage of the vessel through the water by lessening the frictional resistance of the vessels sides in such passage. Such antifrictional means in the form here shown comprise rollers 2, suitably mounted in bearings secured to the sides of the vessel 1, said rollers extending vertically and being arranged in rows longitudinally of the sides of the vessel 1. I have. found a convenient method of mounting the rollers 2 on the sides of the vessel to be by securing to the sides of the vessel 1 at a suitable distance apart channels 3, provided with an inverted- T-shaped groove 3. J ournal-bo xes 4, adapted to receive the ends of the rollers 2, are detachably mounted on the channels 3. In the form shown the journal-boxes 4 are mounted Another object of my invention is to pro- ,against the other.

upon the channels 3 by first inserting into the groove 3*? in the channels 3 the heads of bolts 5, which are of suitable size to pass readily through the opening in the top of the groove 3 and permit of being turned until the ends of the head of the bolt 5 abut against the side wall of the groove 3. The journal-boxes 4 are now placed over the ends of the bolts 5 and nuts 5 screwed on the ends of the bolts 5, thereby securing the journal-boxes 4 in place.

As many rows of rollers 2 as are necessary to cover the space on the vessels sides from above the load water-line to within a short distance of the keel are provided, and the rollers 2 are located with their ends adjacent to each other and their surfaces as near together as possible without bearing one Preferably, the rollers 2 are formed as true cylinders andhave their ends slightly reduced in size to receive a cap 4, having a gudgeon 4 projecting therefrom and forming a bearing upon which the rollers 2 revolve.

The operation and advantages of my invention will be readily understood and appreciated. As the vessel 1 passes through the water the rollers 2 revolve, thereby lessening the friction produced by the-passage of the vessel 1 through the water and saving in the amount of power necessary to propel the vessel. As the greater part of the surface of the vessel 1 which is exposed to contact with the water is provided with the rollers 2, it will be evident that the resistance offered to a'pas-' sage through the water will be greatly lessened.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. The combination with the hull of aboat, of a channel-plate secured thereto, supporting devices secured within said channel-plate, journal-boxes mount-ed upon said supporting devices, and rollers having bearing in said I boxes.

2. The combination with the hull of a boat, of channel-plates secured thereto, journalboxes, means supported within the channels of the plate-for securing said boxes, and rollers mounted in said journal-boxes.

3. A device of the class described, comprising channels provided with inverted-T- 'shaped grooves and arranged along the vessels sides at a suitable distance apart, bolts provided with T-heads adapted to set in said grooves, journal-boxes adapted to be secured on said bolts, and rollers mounted in said journal-boxes.

4. A device of the class described, comprising channels provided with inverted-T- shaped grooves and arranged along the vessels sides at a suitable distance apart, bolts provided with T-heads adapted to set in said grooves, journal-boxes adapted to be secured on said bolts, and cylindrical rollers having their ends reduced and provided with caps having a gudgeon projecting therefrom and adapted to be mounted in said journal-boxes.

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

JOHN MCMILLAN. Witnesses:

I-IARTWELL P. HEATH, J. G. PYBAS. 

